Cod sursa(job #1989632)

Utilizator alexilasiAlex Ilasi alexilasi Data 8 iunie 2017 12:30:28
Problema Rj Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.87 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("rj.in");
ofstream fout("rj.out");

#define mp make_pair
#define f first
#define s second

int n,m,i,j,a[101][101],Min=INT_MAX;
int R[101][101],J[101][101];
short dx[]={-1,-1,-1,0,1,1,1,0},dy[]={-1,0,1,1,1,0,-1,-1};
pair <int,int> ro,ju,x,poz;
char c;
queue < pair <int,int> > q;

int main()
{
    fin>>n>>m;
    fin>>noskipws>>c;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=m;j++)
        {
            fin>>noskipws>>c;
            if(c=='R')
            {
                ro.f=i;ro.s=j;a[i][j]=0;
            }
            else if(c=='J')
            {
                ju.f=i;ju.s=j;a[i][j]=0;
            }
            else if(c=='X')
                a[i][j]=0;
            else if(c==' ')
                a[i][j]=1;
        }
        fin>>noskipws>>c;
    }
    q.push(ro);
    R[ro.f][ro.s]=1;
    while(!q.empty())
    {
        x=q.front();
        q.pop();
        for(i=0;i<8;i++)
        {
            if(a[x.f+dx[i]][x.s+dy[i]]==1&&R[x.f+dx[i]][x.s+dy[i]]==0)
            {
                R[x.f+dx[i]][x.s+dy[i]]=1+R[x.f][x.s];
                q.push(mp(x.f+dx[i],x.s+dy[i]));
            }
        }
    }

    q.push(ju);
    J[ju.f][ju.s]=1;
    while(!q.empty())
    {
        x=q.front();
        q.pop();
        for(i=0;i<8;i++)
        {
            if(a[x.f+dx[i]][x.s+dy[i]]==1&&J[x.f+dx[i]][x.s+dy[i]]==0)
            {
                J[x.f+dx[i]][x.s+dy[i]]=1+J[x.f][x.s];
                q.push(mp(x.f+dx[i],x.s+dy[i]));
            }
        }
    }
    for(i=1;i<=n;i++)
        for(j=1;j<=m;j++)
        {
            if(R[i][j]==J[i][j]&&R[i][j]&&R[i][j]<Min)
            {
                Min=R[i][j];
                poz.f=i;
                poz.s=j;
            }
        }
    fout<<Min<<" "<<poz.f<<" "<<poz.s<<'\n';
    return 0;
}